cs35l56_hda_i2c.c

 1// SPDX-License-Identifier: GPL-2.0-only
 2//
 3// CS35L56 HDA audio driver I2C binding
 4//
 5// Copyright (C) 2023 Cirrus Logic, Inc. and
 6//                    Cirrus Logic International Semiconductor Ltd.
 7
 8#include <linux/i2c.h>
 9#include <linux/module.h>
10#include <linux/regmap.h>
11
12#include "cs35l56_hda.h"
13
14static int cs35l56_hda_i2c_probe(struct i2c_client *clt)
15{
16	const struct i2c_device_id *id = i2c_client_get_device_id(clt);
17	struct cs35l56_hda *cs35l56;
18	int ret;
19
20	cs35l56 = devm_kzalloc(&clt->dev, sizeof(*cs35l56), GFP_KERNEL);
21	if (!cs35l56)
22		return -ENOMEM;
23
24	cs35l56->base.dev = &clt->dev;
25
26#ifdef CS35L56_WAKE_HOLD_TIME_US
27	cs35l56->base.can_hibernate = true;
28#endif
29
30	cs35l56->base.regmap = devm_regmap_init_i2c(clt, &cs35l56_regmap_i2c);
31	if (IS_ERR(cs35l56->base.regmap)) {
32		ret = PTR_ERR(cs35l56->base.regmap);
33		dev_err(cs35l56->base.dev, "Failed to allocate register map: %d\n",
34			ret);
35		return ret;
36	}
37
38	ret = cs35l56_hda_common_probe(cs35l56, id->driver_data, clt->addr);
39	if (ret)
40		return ret;
41	ret = cs35l56_irq_request(&cs35l56->base, clt->irq);
42	if (ret < 0)
43		cs35l56_hda_remove(cs35l56->base.dev);
44
45	return ret;
46}
47
48static void cs35l56_hda_i2c_remove(struct i2c_client *clt)
49{
50	cs35l56_hda_remove(&clt->dev);
51}
52
53static const struct i2c_device_id cs35l56_hda_i2c_id[] = {
54	{ "cs35l54-hda", 0x3554 },
55	{ "cs35l56-hda", 0x3556 },
56	{ "cs35l57-hda", 0x3557 },
57	{}
58};
59
60static const struct acpi_device_id cs35l56_acpi_hda_match[] = {
61	{ "CSC3554", 0 },
62	{ "CSC3556", 0 },
63	{ "CSC3557", 0 },
64	{}
65};
66MODULE_DEVICE_TABLE(acpi, cs35l56_acpi_hda_match);
67
68static struct i2c_driver cs35l56_hda_i2c_driver = {
69	.driver = {
70		.name		  = "cs35l56-hda",
71		.acpi_match_table = cs35l56_acpi_hda_match,
72		.pm		  = &cs35l56_hda_pm_ops,
73	},
74	.id_table	= cs35l56_hda_i2c_id,
75	.probe		= cs35l56_hda_i2c_probe,
76	.remove		= cs35l56_hda_i2c_remove,
77};
78module_i2c_driver(cs35l56_hda_i2c_driver);
79
80MODULE_DESCRIPTION("HDA CS35L56 I2C driver");
81MODULE_IMPORT_NS("SND_HDA_SCODEC_CS35L56");
82MODULE_IMPORT_NS("SND_SOC_CS35L56_SHARED");
83MODULE_AUTHOR("Richard Fitzgerald <rf@opensource.cirrus.com>");
84MODULE_AUTHOR("Simon Trimmer <simont@opensource.cirrus.com>");
85MODULE_LICENSE("GPL");